Quarter	Billions of US Dollars
1978-07-01	0.06176
1978-10-01	0.06179
1979-01-01	0.06127
1979-04-01	0.06125
1979-07-01	0.06124
1979-10-01	0.06162
1980-01-01	0.06122
1980-04-01	0.06245
1980-07-01	0.06244
1980-10-01	0.06186
1981-01-01	0.06147
1981-04-01	0.06050
1981-07-01	0.06029
1981-10-01	0.06053
1982-01-01	0.05994
1982-04-01	0.05981
1982-07-01	0.05937
1982-10-01	0.05964
1983-01-01	0.05923
1983-04-01	0.05915
1983-07-01	0.03443
1983-10-01	0.03418
1984-01-01	0.03418
1984-04-01	0.03398
1984-07-01	0.12344
1984-10-01	0.12285
1985-01-01	0.12301
1985-04-01	0.12301
1985-07-01	0.12375
1985-10-01	0.12460
1986-01-01	0.12438
1986-04-01	0.12414
1986-07-01	0.09000
1986-10-01	0.09000
1987-01-01	0.09000
1987-04-01	0.09000
1987-07-01	0.05000
1987-10-01	0.05000
1988-01-01	0.05000
1988-04-01	0.05000
1988-07-01	0.05000
1988-10-01	0.05000
1989-01-01	0.05000
1989-04-01	0.05000
1989-07-01	0.05000
1989-10-01	0.05000
1990-01-01	0.05000
1990-04-01	0.05000
1990-07-01	0.05000
1990-10-01	0.05000
1991-01-01	0.05000
1991-04-01	0.05000
1991-07-01	0.05000
1991-10-01	0.05000
1992-01-01	0.05000
1992-04-01	0.05000
2002-01-01	0.45000
2002-04-01	0.45000
2002-07-01	0.75000
2002-10-01	0.75000
2003-01-01	0.75000
2003-04-01	0.75000
2003-07-01	0.75000
2003-10-01	0.95000
2004-01-01	0.95000
2004-04-01	0.95000
2004-07-01	0.95000
2004-10-01	1.45000
2005-01-01	1.00000
2005-04-01	1.50000
2005-07-01	1.50000
2005-10-01	1.50000
2006-01-01	1.51933
2006-04-01	2.50283
2006-07-01	2.37566
2006-10-01	2.85949
2007-01-01	2.86829
2007-04-01	3.17950
2007-07-01	3.49505
2007-10-01	3.52749
2008-01-01	3.90671
2008-04-01	3.89621
2008-07-01	3.79172
2008-10-01	3.28972
2009-01-01	3.25087
2009-04-01	3.29360
2009-07-01	3.31788
2009-10-01	3.31259
2010-01-01	3.28901
2010-04-01	2.74209
2010-07-01	3.81413
2010-10-01	3.80308
2011-01-01	4.02205
2011-04-01	3.10471
2011-07-01	3.31145
2011-10-01	3.56469
2012-01-01	3.59097
2012-04-01	3.56369
2012-07-01	2.82247
2012-10-01	3.65198
2013-01-01	3.43694
2013-04-01	3.42157
2013-07-01	3.31841
2013-10-01	3.31884
2014-01-01	3.82421
2014-04-01	4.83328
2014-07-01	5.54739
2014-10-01	5.49701
2015-01-01	5.54743
2015-04-01	6.46736